Home / 20,634.90-28,483.32-12,677.82

Finding the Fourth Proportional to 20,634.90, 28,483.32 and 12,677.82

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Solution

The fourth proportional to 20,634.90, 28,483.32 and 12,677.82 is: 17,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.90 : 28,483.32 = 12,677.82 : x
  2. Step 2: Convert to fraction form
    20,634.90/28,483.32 = 12,677.82/x
  3. Step 3: Cross multiply
    20,634.90x = 28,483.32 × 12,677.82
  4. Step 4: Simplify right side
    20,634.90x = 361,106,403.96
  5. Step 5: Solve for x
    x = 361,106,403.96/20,634.90
  6. Step 6: Final answer
    x = 17,499.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.